Add ErrorHandler interface, as well as ErrorHandler\Throwing
and ErrorHandler\Collecting. The error handler is passed to
Parser::parse(). This supersedes the throwOnError option.
NameResolver now accepts an ErrorHandler in the ctor.
Lexer::startLexing() no longer throws, instead errors can be fetched
using Lexer::getErrors().
Lexer errors now also contain full line and position information.
Kind specifies whether the number was formatted as decimal, octal,
binary or hex. The pretty printer reproduces the number kind (but
not necessarily the exact formatting).
As these are shared between Php5 and Php7 parsers they should be
in some common place, otherwise we'd have to always reference either
one or the other.
Were this library to be fully annotated with scalar types and
return types where possible and were strict types to be enabled
for all files, the test suite would now pass.
Also change endFilePos semantics to refer to the last character that
is *included* in the token, rather than one past the last character.
This ensures that all end* attributes have the same semantics.
The lexer can now optionally add startFilePos and endFilePos
attributes, which are offsets in to the lexed code string.
The end offset currently points one past the last character of
the token - this is pending further discussion.
The attributes are not added by default and have to be enabled
using the new 'usedAttributes' lexer option:
$lexer = new Lexer([
'usedAttributes' => [
'comments', 'startLine', 'endLine',
'startFilePos', 'endFilePos'
]
]);
